Facile synthesis of polypyrrole coated graphene Gr/Ag–Ag2O/PPy nanocomposites for a rapid and selective response towards ammonia sensing at room temperature

• DOI: 10.1016/j.jsamd.2021.02.003
• Publication Date: 2021-02-17T19:47:50Z
• Authors: Mohd Shoeb; Mohammad Mobin; Sharique Ahmad; Alim H. Naqvi
• Keywords: Polypyrrole; Nanomaterials

This work demonstrates the fabrication of a highly selective ammonia (NH3) gas sensor based on Graphene/Silver–Silver Oxide/Polypyyrole (Gr/Ag–Ag2O/PPy) nanocomposite. To archive this objective, cost-effective, room temperature mediated solution-based synthesis Gr/Ag–Ag2O/PPy nanocomposite was exploited as an efficient performance NH3 through combining exceptional electrical characteristics Graphene and sensing abilities Ag–Ag2O/PPy. The as-synthesized nanomaterials were examined for relative DC conductivity with vapors' exposure at (25 °C) signals' changes. incorporation Gr/Ag–Ag2O in PPy revealed about 40 times higher amplitude change compared to pristine vapors. reversibility response regarding effective variation range from 9.15 S/cm 6.48 observed ambient air 1000 ppm shown offer more excellent selectivity toward due its basicity different volatile organic compounds.